Rooting your Android operating system that is running on the OnePlus 3 smartphone is probably one of the most well-known phrases regarding Android, but not everyone knows what it is all about. Rooting the OS is necessary for anyone who enjoys tinkering with the operating system. By default, Android is already taught how to think by Android developers as well as our manufacturers and phone carrier networks. It is taught to think so that it keeps us in the confines of how these companies would like us to use the phone which is precisely to generate as much revenue for them as possible while not caring about what you would want at all. You are essentially locked within an operating system prison designed for them to make money from your face. There is a way in which we can collectively get out of operating system jail so to speak, and we do that by rooting the OnePlus 3 smartphone.
Here is everything you need to root OnePlus 3 smartphones when they are running on the Android 6.0.1 Marshmallow software updates:
- You must have installed a custom recovery on the OnePlus 3 smartphone  before you can follow this guide to root the handset by installing an appropriate version of the SuperSU application. We have the guide to install Team Win’s fabulous TWRP Recovery, which is the best custom recovery to install these days waiting at the helm.
BEFORE WE BEGIN
- Just like with installing a custom recovery image to take over from the stock recovery partition, you should backup your data that is on the OnePlus 3 smartphone before following this guide. However, the way in which we recommend to do that now changes from what we said before you had installed a custom recovery image. Now you may take the NANDroid Backup options from your new custom recovery that is installed. Feel free to do that during the guide after you have the custom recovery booted up, and you can see the Backup button from the recovery menu.
HOW TO ROOT ONEPLUS 3 RUNNING ON ANDROID 6.0.1 MARSHMALLOW
- Download the forced and systemless version of the SuperSU 2.74 application  from here and place it on the desktop of the computer without unzipping the file.
- Connect the OnePlus 3 smartphone to the computer with the USB cable and then copy the SuperSU 2.74 zip file over to the internal storage SD card.
- Unplug the OnePlus 3 smartphone from the computer once you are confident you have the SuperSU stored on the SD card.
- Turn off the OnePLus 3 smartphone and reboot it into the recovery mode by pressing the same hardware combination you use for the stock recovery mode, and you get the custom recovery booting up on the display.
- Tap the NANDroif Backup option from the TWRP menu by tapping on the ‘Backup’button if you wanted to backup the data the NANDroid way.
- From the main TWRP menu, tap on the ‘Install’ button and then follow the on-screen guidelines to upload the SuperSU 2.74 package from the internal storage SD card.
- Swipe at the bottom of the screen where it gives you the option to confirm the installation and then wait until the flashing is complete.
Select the option that says it reboots the system from the main recovery menu when it is done.
In conclusion, that is how to root OnePlus 3 smartphones when they are running on the Android 6.0.1 Marshmallow updates by using the SuperSU version 2.74 from the custom recovery menu that you installed earlier. You can open the Google Play Store application as soon as the OnePlus 3 handset reboots and install one of the root checker apps that are available. By checking whether or not the guide worked, you can save yourself some hassle if you run into trouble with root applications not working. For the most part, installing root apps is very simple: just search for the name you want and download it like any other application, and make sure you choose to grant it root permissions when the SuperSU applications prompt you with a pop-up message box on the display.
Moreover, anyone who did not get the OnePlus 3 smartphone rooted because they could not find the SuperSU from the internal storage SD card should try downloading it from the computer again and make sure you keep it in the first folder and not in any of the potential subfolders you have there. Sometimes they do not show up when you have them sitting in a subfolder.